The purpose of this study was to examine effects of 4-day FIR heat on
selected physiological variables such as serum concentration of
testosterone, cortisol and hormone binding globulin, creatinekinase
and high-sensitivity C-reactive protein, as well as physical performance
of power athletes during a 5 -day training period. This design aimed to
define the effects of FIR heat on recovery of power athletes from
intensive training. We hypothesize that there will be positive effects
on physical performance and consequently the FIR heat will be useful in
sport.